I used to love running until i joined ROTC. They make use run in formation 4 times a week for about 45 min. We run 15:00 min/2mile pace (the boys pace) the whole time. (my pace is about 17:45 min/2mile) I'm always burning and aching on the inside and I ALWAYS feel like dying the whole time and hours after. Honestly, I enjoy elliptical or bike for 45 mins. I can do that. Running sucks.....